[Suggstion] Adding an auto-attack to target trade ships.
In one of my game in MP, I was beatened back to an obscured asteroid base and my teammates managed to divert them from killing the asteroid. With just a few ships, I attempted to disrupt his trade profits by sending them to a heavy traffic trade route and destroy the the trade ships. It gets hard to sludge through click each and every trade ship in order to keep the ships attacking them instead of targeting the structures. I suggest a button that makes the ships selected only target the trade ships and ignore everything else.